Binding post fixing mechanism and circuit board

The utility model discloses a binding post fixing mechanism and a circuit board, and aims to solve the technical problems that a copper column is easily damaged due to too tight fixing of a binding post, and the binding post is too loose and unstable in the prior art. The fixing device comprises a conductive assembly and a fixing assembly, wherein the fixing assembly is arranged on a PCB base plate in a penetrating manner; wherein the conductive assembly and the fixing assembly are detachably connected and clamp the PCB base plate therebetween, and the conductive assembly and the PCB base plate electrically conduct the conductive assembly and the fixing assembly to be in threaded connection; wherein the conductive assembly is a hollow copper column provided with an internal thread, the fixing assembly is correspondingly provided with an external thread, and the fixing assembly adopts a standard stainless steel bolt. The beneficial effects of the utility model are that the torque is increased and the binding p